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12490033 = 53235661
BaseRepresentation
bin101111101001…
…010100110001
3212111120002211
4233221110301
511144140113
61123412121
7211110043
oct57512461
925446084
1012490033
117060a46
124224041
13278406a
141931a93
15116ab3d
hexbe9531

12490033 has 4 divisors (see below), whose sum is σ = 12725748. Its totient is φ = 12254320.

The previous prime is 12490031. The next prime is 12490043. The reversal of 12490033 is 33009421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33009421 = 36319091.

It can be written as a sum of positive squares in 2 ways, for example, as 7436529 + 5053504 = 2727^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 12490033 - 21 = 12490031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12489986 and 12490013.

It is not an unprimeable number, because it can be changed into a prime (12490031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117778 + ... + 117883.

It is an arithmetic number, because the mean of its divisors is an integer number (3181437).

Almost surely, 212490033 is an apocalyptic number.

It is an amenable number.

12490033 is a deficient number, since it is larger than the sum of its proper divisors (235715).

12490033 is an equidigital number, since it uses as much as digits as its factorization.

12490033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235714.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12490033 is about 3534.1240781840. The cubic root of 12490033 is about 232.0177416575.

Adding to 12490033 its reverse (33009421), we get a palindrome (45499454).

The spelling of 12490033 in words is "twelve million, four hundred ninety thousand, thirty-three".

Divisors: 1 53 235661 12490033